Bring a large pot of water to a boil; boil pig's ears until no longer pink, about 10 minutes. Drain. Let cool, at least 15 minutes.
Combine 3/4 cup water, vinegar, sugar, salt, and pepper in a large bowl. Add the pig's ears and mix together. Cover with plastic wrap and keep refrigerated. Serve with green bell pepper, red bell pepper, and green chile.